Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland.
Natural Resources Institute Finland (Luke), Aquatic Population Dynamics, Joensuu, Finland.
J Fish Biol. 2021 Sep;99(3):1130-1134. doi: 10.1111/jfb.14769. Epub 2021 May 17.
Cadmium (Cd) exposure can impair the traits of aquatic animals associated with reproduction. In natural lakes Cd is typically detected at concentrations below 0.001 mg l . The authors investigated the impact of ultra-acute Cd exposure on sperm motility in European whitefish (Coregonus lavaretus). They activated sperm with water containing various nominal concentrations of Cd and recorded sperm motility parameters. Only the highest Cd concentration (500 mg l ) was associated with decreased sperm swimming velocity and increases in both the percentage of static cells and curvature of the sperm swimming trajectory. The results indicate that environmentally realistic concentrations of Cd during the sperm motility activation are not critically harmful to male C. lavaretus fertilization potential.
镉 (Cd) 暴露会损害与生殖相关的水生动物的特征。在天然湖泊中，Cd 的浓度通常低于 0.001mg/L。作者研究了超急性 Cd 暴露对欧洲白鱼（Coregonus lavaretus）精子活力的影响。他们用含有不同名义浓度 Cd 的水激活精子，并记录精子活力参数。只有最高 Cd 浓度（500mg/L）与精子游动速度降低以及静止细胞比例和精子游动轨迹弯曲度增加有关。结果表明，在精子活力激活过程中，环境中实际存在的 Cd 浓度不会对雄性 C. lavaretus 的受精能力产生严重危害。
